Results 271 to 280 of about 2,825,153 (362)

Targeting carbon reduction in UK households: A new segmentation model using financial transaction data

open access: yesJournal of Industrial Ecology, EarlyView.
Abstract Designing effective and targeted policies to reduce household emissions needs to consider variability in household consumption patterns, preferences, and financial capacities. This paper introduces a new segmentation model of household carbon footprints that uses financial transaction data from over 700,000 customers of a major high‐street ...
Jasmine Wells   +5 more
wiley   +1 more source

A note on Johansen's rank conditions and the Jordan form of a matrix

open access: yesJournal of Time Series Analysis, EarlyView.
This note presents insights on the Jordan structure of a matrix which are derived from an extension of the I(1) and I(2) conditions in Johansen (1996). It is first observed that these conditions not only characterize, as it is well known, the size (1 or 2) of the largest Jordan block in the Jordan form of the companion matrix but more generally the ...
Massimo Franchi
wiley   +1 more source

Polar Coordinates for the 3/2 Stochastic Volatility Model

open access: yesMathematical Finance, EarlyView.
ABSTRACT The 3/2 stochastic volatility model is a continuous positive process s with a correlated infinitesimal variance process ν$\nu $. The exact definition is provided in the Introduction immediately below. By inspecting the geometry associated with this model, we discover an explicit smooth map ψ$ \psi $ from (R+)2$({\mathbb{R}}^+)^2 $ to the ...
Paul Nekoranik
wiley   +1 more source

Diagnosis of high‐speed railway ballastless track arching based on unsupervised learning framework

open access: yesComputer-Aided Civil and Infrastructure Engineering, EarlyView.
Abstract Vehicle‐mounted detection methods have been widely applied in the maintenance of high‐speed railways (HSRs), providing feasibility for diagnosing ballastless track arching. However, applying detection data faces several key limitations: (1) The threshold mostly requires manual setting, making recognition accuracy highly subjective; (2) the ...
Xueyang Tang   +4 more
wiley   +1 more source

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